• A hands-on programming exercise which helps hone your skills through practice.
• Code Katas are usually set up as a series of unit tests which fail. Your task is to make them pass.

I hear and I forget.
I see and I remember.
I do and I understand.

-- Confucius

1. Java Lambda Kata - Practice and learn Java 8 lambdas with simple exercises
2. Deck of Cards Kata - Practice using Java 8 Streams, Eclipse Collections, Guava, Apache Commons and/or Vavr on a simple domain
3. Eclipse Collections Katas - Practice and learn Eclipse Collections Data Structures and Algorithms with two classic Katas
4. Donut Kata - Practice and learn more advanced Eclipse Collections APIs using Java or Kotlin
5. CodePoint Kata - Read a secret message from a file into memory, translate it and then write out the revealed message to a file.
6. JMH Kata - Experiment with the Java Microbenchmark Harness by running and writing micro-benchmark performance comparisons.
7. Calendar Kata - Practice and learn the APIs in the Java 8 Date/Time and ThreeTen-Extra libraries.

1. Java 10+
2. Maven 3.5.3+
3. IDE of your choice